UE Mobility Timeline for PRACH Across Specific Uplink BWPs
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing mobility procedures for RedCap UEs due to the additional delay incurred by BWP switching, as standard timelines do not account for the need to switch between BWPs for SSB detection and PRACH transmission.
Innovation Solution
Adjusting mobility procedure timelines to include the additional delay for BWP switching time, ensuring RedCap UEs can successfully perform mobility procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard mobility procedure timelines are used, then the procedure is simple and fast, but the mobility procedure fails for RedCap UEs due to unaccounted BWP switching delay
Solution Approach 1:
The patent applies preliminary action by pre-calculating and accounting for BWP switching time when determining the mobility procedure timeline. The network device calculates the timeline parameter based on the detected BWP switching delay before instructing the UE to perform the mobility procedure, ensuring the UE has sufficient time to switch BWPs and complete the procedure successfully.
2Reliability
If BWP switching time is accounted for in the timeline, then mobility procedure reliability improves, but the timeline determination becomes more complex
Solution Approach 1:
The patent applies self-service by enabling the network device to automatically detect and calculate the BWP switching time based on UE feedback or predefined parameters. The system self-adjusts the timeline parameter without requiring manual configuration, reducing operational complexity while ensuring reliability.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for wireless communication by a user equipment (UE). According to certain aspects, a UE may be configured to detect, in a first bandwidth part (BWP), a condition triggering a mobility procedure that involves a physical random access channel (PRACH) transmission in a second BWP, determining a timeline for transmitting the PRACH in the second BWP, based on a mobility procedure delay that accounts for BWP switching time for switching from the first BWP to the second BWP, and transmitting the PRACH in the second BWP in accordance with the timeline.